Dust-collector



Frith LOUIS G. `RADKFY, OF PLYMOUTH, ILLINOIS, ASSIGNOR vOF ONE-HALF 'l`O FOVVLER d: FOWLER, OF ST. LOUIS, MISSOURI.

DUST-COLLECTOR.

lSPEGIFICATION forming part of Letters Patent No. 461,801, dated October 20, 1891.

Application iiled May 21, 1888. Serial No. 274.576. (No model.)

To all wil/0711, it' may concern:

Be it known that I, LOUIS G. RADKEY, a citizen of the United States, residing at Plymouth, in the county of Hancock and State of Illinois, have invented a certain new and useful Improvement in Dust- Collectors, of which the following is such a full, clear, and eXact description as will enable anyone skilled in the art to which it appertains to make and use the same, reference being had tothe accompanying drawings, forming part of this specification.

The object of my invention is to separate dust from air, especially dust from air received from wheat-cleaning machinery, middling-puriiers, or from any source where air and dust are commingled.

The invention relates to a series of dustcollectors, so that each receives substantially an equal supply of dust-laden air.

The invention consists in details of construction and arrangement, which will now be set forth in full, and the novel features thereof pointed out in the claims appended hereto.

Referring to the accompanying drawings, making a part of this specification, Figure I is a plan of my sectional dust-collector with a part of the top removed, so Aas to show the arrangement more clearly. Fig. II is a sectional elevation thereof on the line II II of Fig I.

The same figures of reference indicate the same parts in the two views.

l is a trunk that leads from the middlingspurifier or from any partof the mill or lfrom any source where dust and air -are commingled.

2 2, 3 3, and 4 4 are each independent dustcollecting-chambers,all of which are fed by the trun'k l, through which trunk the air is forced by any suitable means. These dust-chambers arearrangedinagroup orcluster,preferablyby twos,one set being arranged back of the other. Each one consists of a straight cylindrical portion 5 and a conical portion 6, which are preferably made of sheet iron or tin-and may be of any size. From each of said dust-chambers depends a tube 7,Which is provided with an elbow. These tubes feed into a common pipe 8. The chambers are held in place and .air fed to the chambers by the trunk.

supported by boards or iron plates l0 and ll, which are provided with sides l2. This forms in effect an extension of the truck between the several dust-chambers. Each chamber is provided with a tube 13, that extends through its top board l0. The tubes I3 are made to fit snugly the openings in the top board l0, so that they may be raised and lowered to regulate the discharge of air from the various chambers. The first two chambers 2 2 are arranged the farthest apart and have openings through which a portion of the air from the truuk may be intercepted. The second set of chambers 3 3 are arranged nearer together and are provided lwith openings, the same as previously described, so as to intercept a portion of the remaining part of the The third set of chambers 4 et are arranged side by side and touch each other, so that the openings in each of them will intercept all of the remaining air from the trunk. The periphery of each dust-chamber is cut and a portion of the same raised, so as to form the openings before referred to and the lips 14, all of which are arranged substantially parallel with the current in the trunk. The lips 14 of the dustchambers 2 2 are arranged so as to cause onethird of the amount of 'air to pass into said chambers, the lips of the dust-chambers 3 3 another third into their respective chambers, and the lips of the dust-chambers 4 t the remaining third into their respective chambers. The sum of the area of the tubes 13 is made equal to the area of the trunk l, throughwhich the air is delivered to the various chambers. There may be any number of chambers arranged so as to receive the air from the trunk. I do not wish, therefore, to limit myself to any number of chambers fed by said trunk.

The operation of the apparatus is as follows: The air from the trunk carrying the dust is received into each of the chambers under pressure, as previously explained, and

is caused by said pressure to rotate therein, being fed in each of the chambers tangentially to them. The dust being heavier than the air, the centrifugal force imparted to the dust will cause it to be thrown against the sides of the chambers, and it Will gravitate IOO downward into the funnel-shaped part of the chambers and pass through the tubes 7 into the tubes S, as shown by the arrows having barbs. The air in the meantime, being under pressure, will escape through the tubes 13, and it will be free from dustfor the reason just mentioned-that the centrifugal force Will throw the dust from the center. Enough chambers are employed to handle all the product of any machine. In my arrangement there is no back pressure on the machine, no puiiing at the discharge-tubes 13, and the discharge of air can be regulated by moving the tubes 13 up or down, as desired.

Having now fully set forth my invention, Whatl desire to claim, and secure by Letters Patent of the United States, is-

l. The combination to form a sectional dustcollector, of the trunk l, the dust-chambers 2 2, arranged so as to intercept a portion of the air circulating in said trunk, the dust-chambers 3 3, arranged back of the former and nearer together, so as to intercept a second portion ot' the air circulating in said trunk, and the chambers 1 4, arranged together so as to intercept the remaining portion of the air circulating in said trunk, for the purpose described.

2. The combination, as hereinbefore set forth, of the trunk` 1, the dust-chambers 2 2, with the lips 14, arranged to intercept a portion of the air circulating in said trunk, a second set of dust-chambers 3 3, arranged back of the former, havinglips, as described, for intercepting a second portion ofthe an' circulating in said trunk, a third set oli dustchambers arranged back of the second, inter- 

